Adesso Tru-Form 450 - Ergonomic Touchpad Keyboard - Cable Connectivity - USB Interface - 105 Key - English (US) - TouchPad - Compatible with Computer (Windows) - Play/Pause, Previous Track, Next Track, Volume Down, Volume Up, Mute, Eject, Home, Back, Forward, Refresh, ... Hot Key(s) - QWERTY Keys Layout - Membrane: